| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system in which darkening can be performed in a comfortable environment without causing discomfort feeling to human beings while achieving an energy-saving function. <P>SOLUTION: In a memory of a lighting system, a correspondence relationship among an initial output, a target output, and time required for darkening from the initial output to the target output in performing darkening control of a light emission output is stored in advance. When the initial output and the target output are specified (YES in S1), the time required for the darkening is specified from the correspondence relationship (S3), and in a single logarithmic plot in which a vertical axis is a logarithmic axis indicating the light emission output, and a horizontal axis is a linear axis indicating the time, the light emission output is reduced at such a change rate that the light emission output has a linear relationship with respect to a lapse of time in specified time from the initial output to the target output (S5). <P>COPYRIGHT: (C)2012,JPO&INPIT |
